Support of error events, how to handle task errors

i'm using the latest Activiti release 5.0rc1. What is the suggested way to handle errors that might occur in an activity/process? I want to have 2 ways of processing in my workflow: one for normal execution and an alternative path in case of an error that might occur in a Java Service Task. BPMN 2.0 defines an Error event node. Is it supported yet or are there plans to support it in the near future?

thank you very much for clarification! I'm quite new to the BPM world and my first understanding is that every serious processrequires some kind of error handling (on the implementation level as well as on the process modelling level).Since Activiti seems to be used in production environments yet, i'm asking myself whether those applications completly avoid error handling in the model or if they have some way to work around the currently missing catching error event.